removal of most globals, just the lock remains
faster mechanism for connecting to pthreads objects
locking independant of the underlying mutex type ( for when error checking is unavailable )
interfaces working in the multi-threaded environment
traits working in the multi-threaded environment
inheritance working as the programmer declared it
function table inherited
INI entries inherited
a more compatible method of creating class entries in the threading context
thread startup and shutdown uniform across SAPI environments
stack to workers from any context with a reference
more tests, to help me with bug reports
some other boring stuff ...

Advancedments in Worker/Stackable functionality
Better use of object funcionality
protected methods provide synchronized access to instance methods for stackables, workers and threads
private methods only allowed to be executed within the threading context
read/write access to all thread data
__prepare no longer required